How do you use $this->variable and return $variable in PHP OOP?

When working with object-oriented programming in PHP, you can use the $this keyword to refer to the current object's properties and methods. To return a variable from within a class, you can use $this->variable to access the class property and return it. 

class MyClass {
    private $variable;

    public function setVariable($value) {
        $this->variable = $value;
    }

    public function getVariable() {
        return $this->variable;
    }
}

$obj = new MyClass();
$obj->setVariable("Hello, world!");
echo $obj->getVariable(); // Output: Hello, world!

Keywords

$this variable return PHP OOP object-oriented programming

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